US4596628A - Method for manufacturing components of complex wall construction - Google Patents

Method for manufacturing components of complex wall construction Download PDF

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Publication number
US4596628A
US4596628A US06/643,066 US64306684A US4596628A US 4596628 A US4596628 A US 4596628A US 64306684 A US64306684 A US 64306684A US 4596628 A US4596628 A US 4596628A
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US
United States
Prior art keywords
shaped bodies
container
wall
layers
bodies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/643,066
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English (en)
Inventor
Wolfgang Betz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines AG
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Assigned to MTU MOTOREN-UND TURBINEN-UNION MUNCHEN GMBH reassignment MTU MOTOREN-UND TURBINEN-UNION MUNCHEN GMBH ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BETZ, WOLFGANG
Application granted granted Critical
Publication of US4596628A publication Critical patent/US4596628A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F7/00—Elements not covered by group F28F1/00, F28F3/00 or F28F5/00
    • F28F7/02—Blocks traversed by passages for heat-exchange media
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • C23C4/185—Separation of the coating from the substrate
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0025—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes

Definitions

  • a broad object of the present invention is to provide a method for manufacturing components of complex wall designs which enables the manufacture of thin-walled components with simple means.
  • the envelope and the shaped bodies are then, at least, partially removed so that the layers which form the wall will surround a cavity formed by the removal of the shaped bodies.
  • the shaped bodies can be formed to correspond no more than roughly to the cavities to be produced in the component to be manufactured. More particularly, the shaped bodies are premanufactured to have a volume equivalent to that of the cavities to be produced in the component, when the shape of the premanufactured bodies deviates from that of the cavity in the component.
  • the ductility of the shaped bodies enables them to change shape during the compression operation.
  • FIG. 1 is a perspective view illustrating a semifinished member of a component manufactured in accordance with the present invention in the form of a cross-flow heat exchanger
  • FIGS. 1 to 3 illustrate various details of semifinished members used in the manufacture of a cross-flow heat exchanger.
  • the cross-flow heat exchanger comprises hollow thin-walled individual tubes arranged in layers in parallel disposition, in which adjacent layers of tubes extend at right angles to one another as illustrated by the semifinished member 11 of the cross-flow heat exchanger of FIG. 1.
  • each of the shaped bodies comprises a cylindrical rod, made, for example, of iron, the cross-sectional area of which rod roughtly corresponds to the intended inside diameter of a heat exchanger tube.
  • the cylindrical rods are coated all around with layers 2 and 3 of nickel-base powder by plasma spraying.
  • the first layer 2 is formed from a composition giving high resistance to corrosion, while the second layer 3 consists of composition having high resistance to stresses at high temperatures.
  • the coated rods of FIG. 2 are assembled on a base plate 4 in rows which alternate in direction to form a stacked array of cube shape as shown in FIG. 1.
  • Four nickel-base square rods 6 form corners for the heat exchanger to be formed and serve as a frame for the individual tubes.
  • a cover plate 5 is positioned on top of the uppermost layer of tubes.
  • the base plate 4, the square rods 6 and the cover plate 5 are fixedly connected together.
  • additional plates 7 of a suitable size and thickness are inserted at the periphery of the assembly.
  • the semifinished member 11 is placed in a snugly fitted container or envelope 8, with a cover 9 with a stub pipe 10 positioned on the semifinished body 11.
  • the base plate 4, the square rod 6, the coated shaped bodies 1, the cover plate 5 and the plates 7 are inserted in the rigid envelope 8 to ensure they maintain their relative positions one with respect to the other.
  • the envelope 8 is then hermetically sealed. Its interior is then evacuated through a connection on the stub pipe 10, and upon evacuation the semifinished member 11 is subjected to hot pressurization, in which the envelope 8 is hot isostatically pressurized. This pressurization will close all spaces between the coated rods and the supporting material to unite all individual members. After the compression operation the surfaces of the former cylindrical rods are exposed and the shaped bodies 1 are removed.
  • the resulting product is a cross-flow heat exchanger with thin wall tubes. The walls of the tubes are formed by the layers 2 and 3 extending in alternation in opposite directions.
  • the assembly of the stacked plates 1' is then placed in fitted envelope 8.
  • This envelope can be a sheet metal container, for example, made of St 37.
  • the plates are assembled in the stack such that the grooves of two plates will face one another with a preformed insert placed in each groove.
  • the insert may be in the form of spear-shaped rods 14 of uncoated core material or in the form of cylindrical rods of uncoated core material.
  • the cross-sectional area of the insert rods is somewhat (about 5%) smaller than the cross-sectional area of a groove formed by two assembled plates placed on one another.
  • cylindrical rods 15 it will be of advantage to use rod material of a heat resistance that is slightly lower than that of the plate material.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
US06/643,066 1983-08-25 1984-08-22 Method for manufacturing components of complex wall construction Expired - Fee Related US4596628A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3330651A DE3330651C1 (de) 1983-08-25 1983-08-25 Verfahren zur Herstellung von Bauteilen mit komplex gestalteten Waenden
DE3330651 1983-08-25

Publications (1)

Publication Number Publication Date
US4596628A true US4596628A (en) 1986-06-24

Family

ID=6207406

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/643,066 Expired - Fee Related US4596628A (en) 1983-08-25 1984-08-22 Method for manufacturing components of complex wall construction

Country Status (6)

Country Link
US (1) US4596628A (enrdf_load_stackoverflow)
JP (1) JPS6076293A (enrdf_load_stackoverflow)
CA (1) CA1225517A (enrdf_load_stackoverflow)
DE (1) DE3330651C1 (enrdf_load_stackoverflow)
FR (1) FR2556990B1 (enrdf_load_stackoverflow)
GB (1) GB2145354B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040265519A1 (en) * 2003-06-27 2004-12-30 Pellizzari Roberto O. Fabrication of fluid delivery components
US20120067556A1 (en) * 2010-09-22 2012-03-22 Raytheon Company Advanced heat exchanger
US20160290964A1 (en) * 2015-03-31 2016-10-06 Vikraman Raghavan Pipeline transmitter and method for fabrication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175824A (en) * 1985-05-29 1986-12-10 Barry Rene Christopher Paul Producing composite metal articles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619438A (en) * 1945-04-16 1952-11-25 Sperry Corp Method of making a grid structure
US4026746A (en) * 1976-09-13 1977-05-31 Caterpillar Tractor Co. Method of manufacturing an open-celled ceramic article
US4065046A (en) * 1973-02-16 1977-12-27 Brunswick Corporation Method of making passage structures
US4395303A (en) * 1981-04-22 1983-07-26 Masco Corporation Method of manufacturing thin-walled corrosion resistant metallic objects

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607590B2 (ja) * 1979-06-27 1985-02-26 株式会社神戸製鋼所 拡散接合による製品の製造方法
JPS5689395A (en) * 1979-12-19 1981-07-20 Kobe Steel Ltd Jointing method for material hard to joint
JPS56131092A (en) * 1980-03-19 1981-10-14 Kobe Steel Ltd Manufacture of porous member

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619438A (en) * 1945-04-16 1952-11-25 Sperry Corp Method of making a grid structure
US4065046A (en) * 1973-02-16 1977-12-27 Brunswick Corporation Method of making passage structures
US4026746A (en) * 1976-09-13 1977-05-31 Caterpillar Tractor Co. Method of manufacturing an open-celled ceramic article
US4395303A (en) * 1981-04-22 1983-07-26 Masco Corporation Method of manufacturing thin-walled corrosion resistant metallic objects

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040265519A1 (en) * 2003-06-27 2004-12-30 Pellizzari Roberto O. Fabrication of fluid delivery components
US20120067556A1 (en) * 2010-09-22 2012-03-22 Raytheon Company Advanced heat exchanger
US10041747B2 (en) * 2010-09-22 2018-08-07 Raytheon Company Heat exchanger with a glass body
US10429139B2 (en) 2010-09-22 2019-10-01 Raytheon Company Heat exchanger with a glass body
US12181229B2 (en) 2010-09-22 2024-12-31 Raytheon Company Heat exchanger with a glass body
US20160290964A1 (en) * 2015-03-31 2016-10-06 Vikraman Raghavan Pipeline transmitter and method for fabrication

Also Published As

Publication number Publication date
GB2145354B (en) 1987-01-07
FR2556990A1 (fr) 1985-06-28
DE3330651C1 (de) 1984-06-28
GB8418599D0 (en) 1984-08-22
JPS6076293A (ja) 1985-04-30
GB2145354A (en) 1985-03-27
CA1225517A (en) 1987-08-18
FR2556990B1 (fr) 1993-03-05
JPH0337472B2 (enrdf_load_stackoverflow) 1991-06-05

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AS Assignment

Owner name: MTU MOTOREN-UND TURBINEN-UNION MUNCHEN GMBH POSTFA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BETZ, WOLFGANG;REEL/FRAME:004302/0622

Effective date: 19840809

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 19900624